Sequence Diagram

• Draw return messages.
• Design return values and generate return type on operations.
• Create actor: 2 lines were gray initially, and the stick man partly covered the actor name.
• Create object: The whole symbol was gray initially.
• Use existing classes. (Import)
• Create scenario variations. (Copy – paste? Or share common parts and separate differences?)
• Generate unit tests that call operations with designed parameters and check the returned values.